BerkeleyDB has changed its license since version 6. New license (AGPL) may
be incompatible with some packages. So we prefer to stick to version 5
This reverts commit 4c478de2e76ffc1d0a6dc413475307fd44a0a595.
[Peter: adjust comment as suggested by Yann]
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>